questtion? the problem is

Question

1/2 times Y plus 3 equal 15
What does the Y stand for

Answer 1

(1/2)y + 3 = 15
(1/2)y = 12 , I subtracted 3 from both sides
y = 24 , I multiplied both sides by 2

Answer 2

Y stands for some number, an unknown. You could have used x, or z, or Theta, or a, b, c or any symbol.